Keystones — Lintel
Five GCSE retrieval questions · 24 September 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0046
Answer: 4.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 43°. Find adjacent side
Answer: 25.6cm -
4. Ratio Mixed ratio problems
In ratio 3:1:2, what fraction is the second part?
Answer: 1⁄6 -
5. Statistics Mean
Calculate the mean of: 41, 49, 43, 12, 31, 46, 7
Answer: 32.7